Hydrophilic Organic Compound Migration in Biochar-Amended Stormwater Filters with Dynamic Conditions and Varied Background Dissolved Organic Carbon Contents

) accelerated contaminant migration. Fitting the transport model to observed breakthrough curves and equilibrium batch isotherm experiments reveals that increasing the DOC increases the intraparticle diffusion hindrance, reduces the sorption capacity of the carbon, and increases the linearity of the isotherms. Kinetic limitations of contaminant removal are shown to be exaggerated at higher DOC conditions by quantifying the impacts of DOC and contact time on filter performance. This study provides confidence in the robustness of the contaminant transport model predictions for simulating dynamic conditions and offers insight into the impact of dynamic conditions and background DOC on contaminant removal in biochar-amended stormwater filters.